Chest CT images. (A-C) Chest CT imaging on hospital day 2 showed bilateral, multiple ground-glass opacities. (D-F) Chest CT imaging on hospital day 8 showed that the bilateral, multiple ground-glass opacities from the first scan were still there. (G-I) Chest CT imaging on hospital day 19 showed that the range of ground-glass opacities had obviously decreased after use of tocilizumab.